<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
  <head>
    <title>Index Login</title>
  </head>
  <body>
    <form action="${pageContext.request.contextPath}/login" method="post">
      username: <input name="username" />
      password: <input name="password" />
      <button type="submit">提交</button>
    </form>
  </body>
</html>
